Home / 13,613.36-20,431.22-7,041.56

Finding the Fourth Proportional to 13,613.36, 20,431.22 and 7,041.56

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Solution

The fourth proportional to 13,613.36, 20,431.22 and 7,041.56 is: 10,568.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.36 : 20,431.22 = 7,041.56 : x
  2. Step 2: Convert to fraction form
    13,613.36/20,431.22 = 7,041.56/x
  3. Step 3: Cross multiply
    13,613.36x = 20,431.22 × 7,041.56
  4. Step 4: Simplify right side
    13,613.36x = 143,867,661.50
  5. Step 5: Solve for x
    x = 143,867,661.50/13,613.36
  6. Step 6: Final answer
    x = 10,568.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.